90 lines
2.6 KiB
TypeScript
90 lines
2.6 KiB
TypeScript
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import { AbortSignal } from 'bare-abort-controller'
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interface EventMap {
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[event: string | symbol]: unknown[]
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}
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interface EventHandler<in A extends unknown[] = unknown[], out R = unknown> {
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(...args: A): R
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}
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declare class EventEmitterError extends Error {
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static OPERATION_ABORTED(cause: Error, msg?: string): EventEmitterError
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static UNHANDLED_ERROR(cause: Error, msg?: string): EventEmitterError
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}
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interface EventEmitter<in out M extends Record<keyof M, unknown[]> = EventMap> {
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addListener<E extends keyof M>(name: E, fn: EventHandler<M[E]>): this
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addOnceListener<E extends keyof M>(name: E, fn: EventHandler<M[E]>): this
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prependListener<E extends keyof M>(name: E, fn: EventHandler<M[E]>): this
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prependOnceListener<E extends keyof M>(name: E, fn: EventHandler<M[E]>): this
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removeListener<E extends keyof M>(name: E, fn: EventHandler<M[E]>): this
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removeAllListeners<E extends keyof M>(name?: E): this
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on<E extends keyof M>(name: E, fn: EventHandler<M[E]>): this
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once<E extends keyof M>(name: E, fn: EventHandler<M[E]>): this
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off<E extends keyof M>(name: E, fn: EventHandler<M[E]>): this
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emit<E extends keyof M>(name: E, ...args: M[E]): boolean
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listeners<E extends keyof M>(name: E): EventHandler<M[E]>[]
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rawListeners<E extends keyof M>(name: E): EventHandler<M[E]>[]
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eventNames(): (keyof M)[]
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listenerCount<E extends keyof M>(name: E): number
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getMaxListeners(): number
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setMaxListeners(n: number): this
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}
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declare class EventEmitter<in out M extends Record<keyof M, unknown[]> = EventMap> {}
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declare namespace EventEmitter {
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export function on<M extends Record<keyof M, unknown[]>, E extends keyof M>(
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emitter: EventEmitter<M>,
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name: E,
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opts?: { signal?: AbortSignal }
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): AsyncIterableIterator<M[E]>
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export function once<M extends Record<keyof M, unknown[]>, E extends keyof M>(
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emitter: EventEmitter<M>,
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name: E,
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opts?: { signal?: AbortSignal }
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): Promise<M[E]>
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export function forward<
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F extends Record<keyof F, unknown[]>,
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E extends keyof F,
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T extends Record<keyof T, unknown[]> & Pick<F, E>
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>(
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from: EventEmitter<F>,
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to: EventEmitter<T>,
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names: E | E[],
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opts?: { emit?: (name: E, ...args: T[E]) => void }
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): void
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export function listenerCount<M extends Record<keyof M, unknown[]>, E extends keyof M>(
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emitter: EventEmitter<M>,
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name: E
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): number
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export function getMaxListeners(emitter: EventEmitter<any>): number
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export function setMaxListeners(n: number, ...emitters: EventEmitter<any>[]): void
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export let defaultMaxListeners: number
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export { EventEmitter, EventEmitterError as errors, EventMap, EventHandler }
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}
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export = EventEmitter
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